| # istanbul-lib-source-maps | |
| [](https://travis-ci.org/istanbuljs/istanbuljs) | |
| Source map support for istanbuljs. | |
| ## Debugging | |
| _istanbul-lib-source-maps_ uses the [debug](https://www.npmjs.com/package/debug) module. | |
| Run your application with the environment variable `DEBUG=istanbuljs`, to receive debug | |
| output. |